That's a solution in search of a problem. Jesus Christ was God, and the concept of him having original sin is nonsensical.
In the Catholic view, original sin is principally the lack of the indwelling divine life of the Blessed Trinity, and it's clearly impossible for Jesus to be at once God and also supernaturally lifeless.
Of course, that is exactly true. But, being born of a woman, how did He avoid having His human nature tarnished with original sin? The fact that we know Jesus could not have posessed original sin does not make the question go away.
The Protestant does not hazard an answer to this mystery but trusts in God. Others have been less judicious.